Home / 12,738.56-19,108.07-4,418.87

Finding the Fourth Proportional to 12,738.56, 19,108.07 and 4,418.87

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Solution

The fourth proportional to 12,738.56, 19,108.07 and 4,418.87 is: 6,628.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,738.56 : 19,108.07 = 4,418.87 : x
  2. Step 2: Convert to fraction form
    12,738.56/19,108.07 = 4,418.87/x
  3. Step 3: Cross multiply
    12,738.56x = 19,108.07 × 4,418.87
  4. Step 4: Simplify right side
    12,738.56x = 84,436,077.28
  5. Step 5: Solve for x
    x = 84,436,077.28/12,738.56
  6. Step 6: Final answer
    x = 6,628.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.